Biomolecules Test

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Biomolecules Test - 57

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Weekly Quiz Competition

Question 1
1 / -0

On hydrolysis of starch, we finally get:

A
Glucose

B
Fructose

C
Both (a) and (b)

D
Sucrose

Solution

Starch is a polymer of D-glucose units, thus on hydrolysis it only gives glucose.
Question 2
1 / -0

From the following substances, which carbohydrates has the maximum sweetness?

A
Sucrolose

B
Saccharin

C
Aspartme

D
Alitame

Solution

All sugars are compared relative to sucrose on the basis of sweetness. Hence, sucrose is rated one in terms of sweetness.
Alitame is the sweetest among the following with a sweetness rating of 2000, while saccharin, aspartame, and sucralose have a rating of 400, 180, and 600 respectively
Question 3
1 / -0

Which of the following is NOT an enzyme?

A
Lipase

B
Amylase

C
Trypsin

D
Bilirubin

Solution

Bilirubin is the product produced from the breakdown of haemoglobin. It is a yellow compound that occurs in the normal catabolic pathway that breaksdown heme in vertebrates. This catabolism is a necessary process in the body's clearance of waste products that arise from destruction of abnormal blood cells.Its level or range is measured for monitoring the liver or gallbladder issues. It is not an enzyme.
So the correct option is (D).
Question 4
1 / -0

Name the main constituent of the food, in the absence of that one cannot live

A
Carbohydrates

B
Mineral salts

C
Proteins

D
Vitamins

Solution

Carbohydrate is the major source of energy without which one cannot live. It is because carbohydrate is broken down to form instant energy in the form of glucose which can be converted into ATP and thus used for the regular functioning of the cell. Other forms of energy like proteins, vitamins, and minerals are the extra components that are not directly involved in the formation of energy.
So, the correct option is 'carbohydrates'
Question 5
1 / -0

Various types of crystals of calcium carbonate or oxalate are reported in certain families which can also be regarded as aid to taxonomy. Crystals of gypsum are present either singly or in clusters in

A
Tomarix dioica

B
Ficus benghalensis

C
Momordica charantia

D
Nymphaea sp.

Solution

Crystals of calcium oxalate, starch grains, stone cells with lignified walls, brown tannin cells, and crystals of gypsum are present in the cells of Ficus benghalensis, they belong to family Moraceae. The presence of different crystals is the characteristic feature that distinguishes families from each other.
So, the correct option is 'Ficus benghalensis'.
Question 6
1 / -0

Which cell organelle is not correctly associated with an appropriate enzyme or protein?

A
Mitochondria-cytochrome C

B
Rough endoplasmic reticulum-ribosomes

C
Peroxisomes-catalase

D
Nuclear membrane-amino acid permease

Solution

Amino acid permeases are involved in the transport of amino acids into the cell. They are associated with the cell or plasma membrane and not with the nuclear membrane.
So, the correct answer is 'Nuclear membrane-amino acid permease'.
Question 7
1 / -0

Enzymes differ from inorganic catalysts in

A
Not being used up in chemical reactions

B
Working at high.temperature

C
Being proteinaceous in nature

D
Working at high pH

Solution

Enzymes are the biocatalyst that differs from the inorganic catalyst in been proteinaceous in nature.
So, the correct option is 'Being proteinaceous in nature'.
Question 8
1 / -0

The catalytic power of enzyme is represented by :-

A
$${ V }_{ max }$$

B
$${ K }_{ m }$$ constant

C
Turn over number

D
Both (2) & (3)

Solution

The catalytic power of an enzyme is basically the enzyme’s turnover. It is generally denoted by Vmax.
So, the correct answer is 'Vmax'.
Question 9
1 / -0

Which one of the following is not an attribute of enzymes?

A
They are specific in nature

B
They are used in chemical reactions

C
They are thermolabile in nature

D
They are proteinaceous in nature

Solution

Enzymes are the biomacromolecules which catalyze the reactions in the body.
So, the correct answer is 'They are used in chemical reactions'.
Question 10
1 / -0

The three $$p{K}_{a}$$ values of aspartic acid are 1.89, 3.65 and 9.60. The pH of the amino acid is ?

A
2.77

B
6.62

C
5.74

D
7.0

Solution

PKa of Aspartic acid are $$1.89$$, $$3.65$$ and $$9.66$$.
$$pH$$ of Amino acid $$=\dfrac { 1.89+3.65 }{ 2 } =2.77$$

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Re-Attempt Weekly Quiz Competition

Biomolecules Test - 57

Result

Biomolecules Test - 57

Score

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Rank

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SHARING IS CARING

Question 1

Glucose

Fructose

Both (a) and (b)

Sucrose

Solution

Question 2

Sucrolose

Saccharin

Aspartme

Alitame

Solution

Question 3

Lipase

Amylase

Trypsin

Bilirubin

Solution

Question 4

Carbohydrates

Mineral salts

Proteins

Vitamins

Solution

Question 5

Tomarix dioica

Ficus benghalensis

Momordica charantia

Nymphaea sp.

Solution

Question 6

Mitochondria-cytochrome C

Rough endoplasmic reticulum-ribosomes

Peroxisomes-catalase

Nuclear membrane-amino acid permease

Solution

Question 7

Not being used up in chemical reactions

Working at high.temperature

Being proteinaceous in nature

Working at high pH

Solution

Question 8

$${ V }_{ max }$$

$${ K }_{ m }$$ constant

Turn over number

Both (2) & (3)

Solution

Question 9

They are specific in nature

They are used in chemical reactions

They are thermolabile in nature

They are proteinaceous in nature

Solution

Question 10

2.77

6.62

5.74

7.0

Solution

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